1991 chevy s10 blazer starts on 3 to 5 cylinders

Asked by mat907 Sep 23, 2019 at 11:32 PM about the 1991 Chevrolet S-10 Blazer 2 Dr Tahoe 4WD SUV

Question type: Maintenance & Repair

My car has the 4.3 fuel injected. Every time i start it only starts on 3 to 5
cylinders but if i give it a quarter to half throttle for 5 to 10 minutes it catches
on all cylinders and is fine. But the other day it started on what i would guess
to be 3 cylinders and was able to catch on 5 but still had a dead cylinder. I
was wondering if anyone has had a similar problem or if anyone has any
ideas i am pretty mechanically inclined so i don't mind getting my hands dirty.

3 Answers

Check the fuel pressure and engine compression.

1 people found this helpful.
130

the 4,3 though fuel injected still has spark plugs i think ,if so i would replace some

1 people found this helpful.
50

Lot of times thats coolant leaking into the cylinders.. idk what kinda crack this person above me smoked but ok

2 people found this helpful.

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